See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
11 questions from this quiz
New experiments gave fresh evidence
J.J. Thomson
Positive charge with electrons in it
Mixed together evenly
Ernest Rutherford
Alpha particles
A few alpha particles bounced back
A tiny, dense, positive nucleus
James Chadwick
Electrons orbit in specific energy levels
His calculations matched experiments
Select your subjects, and get access to A+ resources today.